Verbal Reasoning - Syllogism - Discussion
Discussion Forum : Syllogism - Syllogism 2 (Q.No. 1)
Directions to Solve
In each of the following questions two statements are given. Which are followed by four conclusions (1), (2), (3) and (4). Choose the conclusions which logically follow from the given statements.
1.
Statements: No door is dog. All the dogs are cats.
Conclusions:
- No door is cat.
- No cat is door.
- Some cats are dogs.
- All the cats are dogs.
Answer: Option
Explanation:
Discussion:
121 comments Page 3 of 13.
Pranitha said:
9 years ago
Yes, option B is the correct answer i.e., conclusion 1 and 3.
Conclusion 1 - is obtained by substituting statement 2 in statement 1.
Conclusion 3 is the obtained by reversing the subject and the predicate or even by the venn diagram as suggested in the explanation.
Conclusion 1 - is obtained by substituting statement 2 in statement 1.
Conclusion 3 is the obtained by reversing the subject and the predicate or even by the venn diagram as suggested in the explanation.
Swagatam guha said:
4 years ago
Here, in the explanation part we see 2 type of Venn diagrams, in the second one we find that some door can also be cat (because its not mentioned that door can't be cat) , so we also have to consider that situation, and hence 1 and 2 are not true, and only 3 is true.
Deepanshu Samdani said:
7 years ago
The answer should be in "some-not" because universal affirmative and universal negative gives the result in the particular negative when the premises is only distributed in the universal negative. So, the correct answer should be the "some cats are not the door".
Sindhu said:
8 years ago
The answer should be (1) (2) and (3) follow.
All the first 3 statements are correct. Door and Cat are disjoint sets (given).
Also Cat is the universal set of Dog (Dog is a subset of Cat). So all 3 are correct. Some cats are dogs but the vice versa is not true.
All the first 3 statements are correct. Door and Cat are disjoint sets (given).
Also Cat is the universal set of Dog (Dog is a subset of Cat). So all 3 are correct. Some cats are dogs but the vice versa is not true.
Prazna goud said:
8 months ago
As the option is 3 I thought that They had given all dogs are cats.
But not all cats are dogs.
Also, there is no link between door and dog.
But have between door and cat.
So, But in the conclusion they had given no door is cat so the statement is wrong.
But not all cats are dogs.
Also, there is no link between door and dog.
But have between door and cat.
So, But in the conclusion they had given no door is cat so the statement is wrong.
(1)
Ajinkya said:
5 years ago
1)No door is cat - false
Because some part of cats are door(given no door is a dog).
2)No cat is door-false
Because some part of cats are door.
3)Some cats are dog -true
4)All the cat are dog -false
Because in a given statement no door is dog
Because some part of cats are door(given no door is a dog).
2)No cat is door-false
Because some part of cats are door.
3)Some cats are dog -true
4)All the cat are dog -false
Because in a given statement no door is dog
Devi said:
9 years ago
In both the statements, middle term exists twice so that conclusion must follow a particular. But one of the statement is negative conclusion must be negative. So, the conclusion is particular negative 4.
Some doors are not cats.
Some doors are not cats.
Sumit porpanth said:
1 decade ago
Only conclusion (3) follow because,
According to 1 Venn diagram its follow the conclusion. But in 2 Venn diagram it does't. That's why answer is wrong.
Same its with conclusion (2) and conclusion (2) is also wrong.
According to 1 Venn diagram its follow the conclusion. But in 2 Venn diagram it does't. That's why answer is wrong.
Same its with conclusion (2) and conclusion (2) is also wrong.
Saritha said:
1 decade ago
The above first statement is not clear then how can we decide the answer? There may be a chance to be some cats can be doors and can't be, will you please tell me the proper solution for this?
Arun.K.S said:
1 decade ago
Option 1 and 2 are negatives, and it is true, if negative conclusions are true take its negation. If negation is true then negative statements will not follows, otherwise it follows.
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